diff --git a/nix/fg42.nix b/nix/fg42.nix
index a23cd28..1383549 100644
--- a/nix/fg42.nix
+++ b/nix/fg42.nix
@@ -78,7 +78,7 @@ stdenv.mkDerivation (final:
       export FG42_EMACSD=~/.fg42/v4/emacs.d
       export FG42_USE_NIX=true;
 
-      LIBRARY_PATH="\$(cc -print-file-name=libgccjit.so):\$LIBRARY_PATH" \
+      LIBRARY_PATH="\$(${stdenv.cc} -print-file-name=libgccjit.so):\$LIBRARY_PATH" \
         FG42_WM=false ${emacsBundle}/bin/emacs \
         --name FG42 \
         -q --no-splash --title FG42 \
@@ -110,7 +110,7 @@ stdenv.mkDerivation (final:
       # export QT_IM_MODULE=xim
       # export CLUTTER_IM_MODULE=xim
 
-      LIBRARY_PATH="\$(cc -print-file-name=libgccjit.so):\$LIBRARY_PATH" \
+      LIBRARY_PATH="\$(${stdenv.cc} -print-file-name=libgccjit.so):\$LIBRARY_PATH" \
         FG42_WM=true ${emacsBundle}/bin/emacs \
         --name FG42 \
         -q --no-splash --title FG42 \